Onechan's in good company, now that Sam Woods is a big sister, too. Welcome to the world, Charlie!
[Update 1 (10:36 am): I had an opportunity to ask onechan on the way to her doctor's appointment if she had any advice for Sam. After some thought, here's what she had to say. "Give your little sister things first." She couldn't quite get her head around the fact that Sam has a little brother. She was more interested in figuring out how old Sam is and when her birthday is. When I asked her again, she was a little more focused. "Be nice, share, help," she said. "Don't let your little sister get into dangerous stuffs. Don't let her run away. I think that's all." Indeed.]